<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
<title>fixed scroll in IE6</title>
<style>
html body{background:url(*) fixed}
#box{position:fixed;left:0px;top:0px;background-color:black;opacity:.3;filter:alpha(opacity=30);width:100%;height:100%;z-index:1;}
</style>
<!--[if lte IE 6]>
<style>
	#box{position:absolute;left:0px;top:expression((a=document.body.scrollTop ? document.body.scrollTop : document.documentElement.scrollTop)+'px');width:100%;height:100%;}
</style>
<![endif]-->
</head>

<body>
<script>
for(var i=0;i<100;i++){
	document.write('some test words<br>');
}
</script>
<div id="box"></div>
<script>
function $(id){return document.getElementById(id)}
</script>
</body>
</html>
